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https://fuchsia.googlesource.com/third_party/pigweed.googlesource.com/pigweed/pigweed
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1b3da3a983
- Mark Status::Ok() and StatusWithSize::Ok() as deprecated. - Replace Status::Ok() with OkStatus(). - Replace StatusWithSize::Ok() with StatusWithSize(). Change-Id: If7192282446bf6d7f90990bb0b4f1b1b89a9228a Reviewed-on: https://pigweed-review.googlesource.com/c/pigweed/pigweed/+/29003 Pigweed-Auto-Submit: Wyatt Hepler <hepler@google.com> Commit-Queue: Auto-Submit <auto-submit@pigweed.google.com.iam.gserviceaccount.com> Reviewed-by: Keir Mierle <keir@google.com>
64 lines
1.6 KiB
C++
64 lines
1.6 KiB
C++
// Copyright 2019 The Pigweed Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy of
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// the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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#include "pw_sys_io/sys_io.h"
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#include <cstdio>
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namespace pw::sys_io {
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Status ReadByte(std::byte* dest) {
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if (dest == nullptr) {
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return Status::FailedPrecondition();
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}
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int value = std::getchar();
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if (value == EOF) {
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return Status::ResourceExhausted();
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}
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*dest = static_cast<std::byte>(value);
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return OkStatus();
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}
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Status TryReadByte(std::byte*) {
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// TryReadByte() is not (yet) supported on hosts.
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return Status::Unimplemented();
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}
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Status WriteByte(std::byte b) {
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if (std::putchar(static_cast<char>(b)) == EOF) {
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return Status::Internal();
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}
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return OkStatus();
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}
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StatusWithSize WriteLine(const std::string_view& s) {
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size_t chars_written = 0;
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StatusWithSize size_result = WriteBytes(std::as_bytes(std::span(s)));
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if (!size_result.ok()) {
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return size_result;
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}
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chars_written += size_result.size();
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// Write trailing newline character.
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Status result = WriteByte(static_cast<std::byte>('\n'));
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if (result.ok()) {
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chars_written++;
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}
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return StatusWithSize(result, chars_written);
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}
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} // namespace pw::sys_io
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